# Saudi Railways Organization

The Saudi Railways Organization (SRO) (Arabic: المؤسسة العامة للخطوط الحديدية) was a state-owned railway company that operated part of Saudi Arabia's rail network, along with the Saudi Railway Company (now Saudi Arabia Railways). The SRO operated a network of railways with a total length of approximately 1,380 kilometers. The network consisted of two main lines. A 449 km passenger line that links Dammam with Riyadh, and a 556 km freight line that connects the King Abdul Aziz Port in Dammam with Riyadh.
There are plans to extend the network to the Red Sea port of Jeddah and, eventually to the borders of Jordan, Yemen, and perhaps all the way to Egypt.
Approval to merge the Saudi Railways Organization and Saudi Railway Company was announced in February 2021, the merger took place on 1 April 2021 and the merged entity is known as the Saudi Arabia Railways.

## Rolling stock

Spanish manufacturer CAF delivered eight fast diesel locomotives in 2012, with one driving van trailer passenger car and four other passenger cars, with a leading power car unit; plus two spare power cars. They are used on the Dammam–Riyadh Line. During 2013 the travel time is 4:15 but there is a target of 3:00 for the future.

### Trainsets

| Class | Image | Top speed | Top speed | Number | Remarks | Built |
| Class | Image | mph | km/h | Number | Remarks | Built |
| CAF | | 112 | 180 | 8 passenger units, 10 power cars (5001-5010) | Passenger trainsets with dedicated power cars. | 2011 |

### Diesel Locomotives

| Class | Image | Top speed | Top speed | Number | Remarks | Built |
| Class | Image | mph | km/h | Number | Remarks | Built |
| ALCO RS-1 | | 65 | 105 | 6 | Series 1000-1005 Diesel-electric locomotives. Originally Arabian American Oil Company A11x50-A11x51, 1002-1005 | 1947–1951 |
| EMD SW1001 | | | | 5 | Series 1022-1026 Order 818000 1/5 Diesel-electric locomotives. | 1981 |
| Class 2400 | | 50 | 80 | 7 | Secondhand Diesel-electric locomotives taken over from NS by Volker Stevin in 1976 for construction works for a seaport in Jubail. Former 2427, 2445, 2485, 2497, 2499, 2519, 2523. Renumbered into 101-107. Sold to Archirodon for rail reconstruction between Damman and Riyadh and renumbered to 276-04 - 276-09. Some scrapped in 1983. Others active until 1994 and stored in Hofuf afterwards. | 1954–56 |
| EMD G18 | | | | 16 | Series 1006-1021 Orders 710971-710975, 713081-713082, 713233-713235, and 748005 1/6 Diesel-electric locomotives. | 1968–1976 |
| EMD GP18M | | | | 1 | Series 1200 Order 700178 Diesel-electric locomotives. rated at 1500 horsepower | 1961 |
| EMD FP7A | | | | 2 | Series 1500-1501 Order 7019 Diesel-electric locomotives taken over from Arabian American Oil Company (their 1006-1007). | 1953 |
| EMD FP9A | | | | 7 | Series 1502-1508 Orders 701553, 701493-701494, 702272-702275 Diesel-electric locomotives | 1956–1959 |
| GP38-2 | | | | 1 | Series 2000. Order 712783. Diesel-electric locomotives | 1973 |
| GPL38S | | | | 7 | Series 2001-2007. Order 201288865. Diesel-electric locomotives | 2015 |
| GT22CW | | | | 3 | Series 2001-2003. Order 748004. Diesel-electric locomotives | 1976 |
| SDL38-2 | | | | 6 | Series 2004-2009. Order 778050. Diesel-electric locomotives | 1978 |
| SDL38 | | | | 6 | Series 2030-2035. Order 20148061 Diesel-electric locomotives | 2016 |
| EMD SDL50 | | | | 31 | Series 3500-3530 Diesel-electric locomotives | 1981–2005 |
| EMD SD70ACS | | | | 61 | Series 4000-4060 Diesel-electric locomotives for a mineral railway | 2010–2016 |
| GT46ACS | | | | 17 | Series 4300-4316. Orders 20118517 and 20148134. Diesel-electric locomotives | 2013–2015 |
| Class 319.2 | | 75 | 120 | >4 | Diesel-electric locomotives bought second hand. | |

## Expansion

The SRO has several plans to expand the network as part of the Saudi Railway Master Plan 2010-2040 (SRMP). Some of the projects under the plan are:
* Saudi Landbridge: The Landbridge project is aimed at connecting the Red Sea with the Persian Gulf. It will involve the construction of a 950 km line from Jeddah Islamic Port to Riyadh, and a 115 km line from Dammam to Jubail.
* North-South line
* The Gulf Railway project is a propose railway network of 2116 km linking all GCC countries. The length of the track inside Saudi Arabia would be 663 km.
* The SRO also has plans to construct three lines in southern Saudi Arabia to improve the region's connectivity with the rest of the country. The lines are the Taif-Khamis Mushayt–Abha line (706 km), the Jeddah-Jizan line (660 km), and the Yanbu–Jeddah line (350 km).